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International Journal of Antennas and Propagation
Volume 2015, Article ID 265962, 6 pages
http://dx.doi.org/10.1155/2015/265962
Research Article

A High-Isolation Dual-Polarization Substrate-Integrated Fabry-Pérot Cavity Antenna

Key Laboratory of Electromagnetic Space Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230027, China

Received 27 June 2014; Revised 23 October 2014; Accepted 14 November 2014

Academic Editor: Giuseppe Mazzarella

Copyright © 2015 Chang Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A dual-polarization substrate-integrated Fabry-Pérot cavity (SI-FPC) antenna is presented in this paper. The patch embedded in SI-FPC is excited with a near-field coupled feeding structure for V-polarization and with a slot-coupled feeding structure for H-polarization. The feeding structures are separated by a ground plane to improve the isolation between the ports. As a design example, an antenna operating at 10.0 GHz is fabricated and measured. A high degree of port isolation (<−40 dB) over the whole operating bandwidth (9.5–10.2 GHz) and good cross-polarization level (>25 dB) can be achieved.